function P=LM_lion_step(G,P,k)
k2=component(k);
P2=G.P{k2};
rr=P.pos-P2.pos;
P.ang=atan2(rr(2),rr(1))-pi;
P.pos=P.pos+G.h*P.speed*[cos(P.ang),sin(P.ang)];
